Water-fertilizer-pesticide integrated tobacco powdery mildew control method

The invention discloses a water-fertilizer-pesticide integrated tobacco powdery mildew prevention and control method which comprises the following steps: weighing kresoxim-methyl according to the dosage of 25-35g per mu in the early stage of powdery mildew attack, diluting kresoxim-methyl with water to obtain diluted liquid medicine, adding the diluted liquid medicine into a liquid storage tank when the nutrient solution in the liquid storage tank is 95-105 kilograms, fully stirring uniformly, and performing drip irrigation with 90-110ml per plant; the liquid storage tank is communicated with a drip irrigation belt pipeline, and a drip irrigation delivery pump is arranged on the pipeline connecting the liquid storage tank and the drip irrigation belt; the drip irrigation tape is laid between tobacco plants, and a plurality of drippers are arranged on the drip irrigation tape at intervals of 25-35 cm. After the method is adopted, the control effect on powdery mildew reaches 87.07%, the disease index is obvious